<!DOCTYPE html>
<html>

<body>
    <h1>HTML Page with images.</h1>
    <img src="thumbnail-v1.png" alt="thumbnail-v1" style="width:450px;height:250px;">
    <img src="thumbnail-v2.png" alt="thumbnail-v2" style="width:450px;height:250px;">
    <img src="thumbnail-v3.png" alt="thumbnail-v3" style="width:450px;height:250px;">
    <img src="thumbnail-v4.png" alt="thumbnail-v4" style="width:450px;height:250px;">
    <img src="thumbnail-v5.png" alt="thumbnail-v5" style="width:450px;height:250px;">
    <img src="thumbnail-v6.png" alt="thumbnail-v6" style="width:450px;height:250px;">
    <img src="thumbnail-v7.png" alt="thumbnail-v7" style="width:450px;height:250px;">
    <img src="thumbnail-v8.png" alt="thumbnail-v8" style="width:450px;height:250px;">
    <img src="thumbnail-v9.png" alt="thumbnail-v9" style="width:450px;height:250px;">
    <img src="thumbnail-v10.png" alt="thumbnail-v10" style="width:450px;height:250px;">
    <img src="thumbnail-v11.png" alt="thumbnail-v11" style="width:450px;height:250px;">
    <img src="thumbnail-v12.png" alt="thumbnail-v12" style="width:450px;height:250px;">
</body>

</html>